B, thanks for your response. Without knowing more about those situation, chances are your feelings, hunches, and intuition are correct. If it looks like a duck, walks like a duck, and quacks like a duck ...

In an instance like the one you mentioned, if you really want to help level the playing field for your co-worker—and if it’s appropriate—maintain your (professional) relationship and give her heads-up and info on opportunities that would be prove to be advantageous to her.

The key here: finesse.